<!DOCTYPE html>
<html>
<head>
    <title>Bootstrap 下拉菜单（Dropdown）插件</title>
    <link rel="stylesheet" href="http://apps.bdimg.com/libs/bootstrap/3.3.0/css/bootstrap.min.css">

    <script src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js"></script>
    <script src="http://apps.bdimg.com/libs/bootstrap/3.3.0/js/bootstrap.min.js"></script>

</head>
<body>

<nav class="navbar navbar-default" role="navigation">
    <div class="navbar-header">
        <a class="navbar-brand" href="#">W3Cschool</a>
    </div>
    <div>
        <ul class="nav navbar-nav">
            <li class="active"><a href="#">iOS</a></li>
            <li><a href="#">SVN</a></li>
            <li class="dropdown">
                <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                    Java
                    <b class="caret"></b>
                </a>
                <ul class="dropdown-menu">
                    <li><a href="#">jmeter</a></li>
                    <li><a href="#">EJB</a></li>
                    <li><a href="#">Jasper Report</a></li>
                    <li class="divider"></li>
                    <li><a href="#">分离的链接</a></li>
                    <li class="divider"></li>
                    <li><a href="#">另一个分离的链接</a></li>
                </ul>
            </li>
        </ul>
    </div>
</nav>



<p>带有下拉菜单的标签页</p>
<ul class="nav nav-tabs">
    <li class="active"><a href="#">Home</a></li>
    <li><a href="#">SVN</a></li>
    <li><a href="#">iOS</a></li>
    <li><a href="#">VB.Net</a></li>
    <li class="dropdown">
        <a class="dropdown-toggle" data-toggle="dropdown" href="#">
            Java <span class="caret"></span>
        </a>
        <ul class="dropdown-menu">
            <li><a href="#">Swing</a></li>
            <li><a href="#">jMeter</a></li>
            <li><a href="#">EJB</a></li>
            <li class="divider"></li>
            <li><a href="#">分离的链接</a></li>
        </ul>
    </li>
    <li><a href="#">PHP</a></li>
</ul>



<p>
    下拉菜单切换有一个简单的方法用来显示或隐藏下拉菜单。
    $().dropdown('toggle')</p>

<nav class="navbar navbar-default" role="navigation">
    <div class="navbar-header">
        <a class="navbar-brand" href="#">W3Cschool</a>
    </div>

    <div id="myexample">
        <ul class="nav navbar-nav">
            <li class="active"><a href="#">iOS</a></li>
            <li><a href="#">SVN</a></li>
            <li class="dropdown">
                <a href="#" class="dropdown-toggle">Java <b                 class="caret"></b></a>
                <ul class="dropdown-menu">
                    <li><a id="action-1" href="#">
                        jmeter</a>
                    </li>
                    <li><a href="#">EJB</a></li>
                    <li><a href="#">Jasper Report</a></li>
                    <li class="divider"></li>
                    <li><a href="#">分离的链接</a></li>
                    <li class="divider"></li>
                    <li><a href="#">另一个分离的链接</a></li>
                </ul>
            </li>
        </ul>
    </div>
</nav>
</div>
<script>
    $(function(){
//        $('.dropdown-toggle').dropdown();
        $(".dropdown-toggle").dropdown('toggle');
    });
</script>



</body>
</html>